docs: def format_api_version(self, api_version):
          """ Return QualysGuard API version for api_version specified.
  
          """
          # Convert to int.
          if type(api_version) == str:
              api_version = api_version.lower()
              if api_version[0] == 'v' and api_version[1].isdigit():
                  # Remove first 'v' in case the user typed 'v1' or 'v2', etc.
                  api_version = api_version[1:]
              # Check for input matching Qualys modules.
              if api_version in ('asset management', 'assets', 'tag', 'tagging', 'tags'):
                  # Convert to Asset Management API.
                  api_version = 'am'
              elif api_version in ('am2'):
                  # Convert to Asset Management API v2
                  api_version = 'am2'
              elif api_version in ('webapp', 'web application scanning', 'webapp scanning'):
                  # Convert to WAS API.
                  api_version = 'was'
              elif api_version in ('pol', 'pc'):
                  # Convert PC module to API number 2.
                  api_version = 2
              else:
                  api_version = int(api_version)
          return api_version